The Influence Of Growth And Yield Under The Different Density And Irrigation Methods On The Spring Corn

In order to explore the suitable planting density and irrigation to spring corn, We carried out differentirrigation methods (membrane drip irrigation (A), no film drip irrigation (B), no film conventionalirrigation (C)) and different planting density field test in the5thAgricultural Shi as example in Xinjiang at2010April to October.Study on the different irrigation methods and different planting density on the growthand yield of spring corn, Proved the the rule of spring corn growth under the planting density and differentirrigation, To explore the high yield of spring corn suitable irrigation mode and the best planting densityprovide certain theoretical basis and practical experience. The main conclusions are as follows:（1）The significantly influence on the growth and yield of spring corn under Different planting densityPlant height, stem diameter, yield increase with the increase of the density In a certain density range,But more than this range decreases, The planting density of120000plants/hm2occurs when the maximumplant height, Stem diameter maximum value appeared in100000plants/hm2，Further variance analysisshowed that, yield of spring maize with different planting density had significant difference; the maximumyield was15041.59kg/hm2through the regression equation for partial derivative, and the correspondingoptimal planting density was134800plants per hectare, which proved that only rational planting densitycould contribute to the growth and development of spring maize, and then realize the improvement ofeconomic yield.(2) Influence of different irrigation regime on the growth and development of spring maizeDifferent irrigation regime had certain impact on plant height, stem diameter, group leaf area and yieldof spring maize under the same irrigation amount. The influence on plant height and stem diameter was:film mulched drip irrigation> none membrane drip irrigation> none membrane conventional irrigation andthe difference were significant after tasseling stage; Leaf area of spring maize increased firstly and thendecreased, and which of film mulched drip irrigation was higher than other two irrigation methods all thetime. Higher leaf area is beneficial for photosynthesis, and promotes yield improvement.Different irrigation regime had significant influence on the yield of spring maize. Film mulched dripirrigation had the highest yield16071.22kg/hm2, which was13298.65kg/hm2under none membrane dripirrigation, and none membrane conventional irrigation had the lowest yield9564.42kg/hm2. Kernels perspike and Thousand Kernel Weight with film mulched drip irrigation improved13.6%and2.46%than nonemembrane conventional irrigation, respectively.Different irrigation regime conspicuously affected soil moisture content in different growth stage,moisture storage capacity showed film mulched drip irrigation> none membrane drip irrigation> nonemembrane conventional irrigation, which indicated film mulched drip irrigation had the strongest ability tostore moisture in the premise of guarantying water requirement for corn growth. Therefore we can concludethat appropriate irrigation regime is helpful to harmonize the formation and allocation proportion of springmaize nutritive organ and economic organ, sequentially realize the improvement of economic yield.